Codex CLI installs a persistent, self-updating background daemon by default

Codex CLI version 0.157.0 automatically installs and runs a persistent, self-updating background daemon by default without user consent, which copies 374 MB of files to ~/.codex and checks for updates hourly. The issue reporter argues this behavior is problematic for CLI users and requests that daemon auto-start be made opt-in, as the expected CLI behavior is for the backend to run only during the session without automatic background updates.